Quadding and centering mechanism for typographical line casting machines



Sept 1957 w. B. ABBOTT ETAL 2,806,587

QUADDING AND CENTERING MECHANISM FOR TYPOGRAPHICAL LINE CASTING MACHINESFiled 001;. 5, 1955 4 Sheets$heet l Sept 17, 1957 Filed Oct. 5, 1955 \N.B. ABBOTT QUADDING AND CENTERING MECHANISM FOR TYPOGRAPHICAL LINECASTING MACHINES ETAL 4 Sheets-Sheet 2 Mm w nmxmng I Sept 17, 1957 w. B.ABBOTT ET AL UADDING AND CENTERING MECHANISM FOR G MACHINESTYPOGRAPHICAL LINE CASTIN 4 Sheets-Sheet 3 Filed Oct. 3, 1955 Carlie/ Rm mw 2 2% M. m% M v t 25 ATTORNEY;

Sept 17, 1957 w. B. ABBOTT ET AL 2,806,587

QUADDING AND CENTERING MECHANISM FOR TYPOGRAPHICAL LINE CASTING MACHINESFiled Oct. 3, 1955 4 Sheets-Chget 4 W/ y; ,,1 "-|Ih M as) .J/ I J; J --Fflu ll I I 1 3 E f u ;-nq-, a)

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ATTORNEK United States Patent QUADDING AND CENTERING MECHANISM FORTYPOGRAPHICAL LINE CASTING MACHINES William B. Abbott, Baldwin, andWilliam J. Thompson, Jamaica, N. Y., assignors to Mergenthaler LinotypeThis invention relates to quadding and centering mechanism fortypographical line casting machines. More particularly, it relates to animproved means for setting such mechanism for any selected operation,said means being especially suited for machines adapted for manual orautomatic control.

Quadding and centering mechanisms are themselves quite well known in thetypographical line casting machine art. In many forms, these mechanismscan be set to quad with the right hand jaw, with the left hand jaw, orwith both jaws, the last mentioned operation being known as centering.The desired operation can be accomplished either by a toggle selector orrotary knob selector for strictly mechanical mechanisms or by pushbuttons in the newer electro-mechanical mechanisms. These devices aremore common to manually controlled machines, which depend upon theoperator to condition the machine for any desired quadding operation.

There are also machines which operate under the control of a coded tapeand are known as automatic line casting machines. In machines of thistype, the quadding and centering mechanism is responsive to appropriatesignals in the tape, one for each line to be composed.

It is further not unusual for automatic line casting machines to bemanually operated and hence to be equipped with a selecting device asmentioned above, those of the push button type now being most popular.When shift* ing from automatic operation to manual operation or viceversa, it has in the past been necessary to manually condition the pushbutton selecting device for automatic or manual operation, whichever maybe the case.

Among other advantages of the present invention, there is the major oneof automatically resetting the manual selecting means when a coded tapeis fed through the tape reading mechanism, thereby eliminating the needfor a manual switch to determine whether the machine will be conditionedfor automatic or manual operation.

Another advantage of the present invention is that, by properconditioning of the manual selecting device, the quadding and centeringmechanism will be responsive to the setting of the device even when themachine is operating automatically from the tape. This feature of theinvention is of extreme importance and utility when it is desired toperform the same quadding or centering function for a number ofsuccessive lines, inasmuch as the quad signal can come from the manualselecting evice rather-than from the tape. In this manner, it ispossible to save one tape signal for each line of composition, therebyminimizing the efiort required of an operator in coding the tape andalso lessening the amount of tape used to control castingof a fixednumber of lines.

In carrying out the present invention, there is provided (1) means forstoring a quad or centering signal in a first information storage stagewhich corresponds to the line in the composing station or assemblingelevator, separate means being provided depending on whether ice thecomposition is being efiected manually or automati cally, (2) meanseffective upon raising of the assembling elevator for transferring thesignal to a second informa tion storage stage which corresponds to theline in delivery or waiting line position, and (3) means effective uponrotation of the main cam shaft, which carries the line in the firstelevator to the casting position, for transferring the signal to thequadding mechanism proper. Means are also provided whereby if a quadsignal is stored in the manually operable first information storagestage and thereafter operation is shifted to automatic control from acoded tape, passage of the tape through the tape decoding apparatus willreset the manual informa-' tion storage device and thereby render thequadding and centering mechanism responsive only to the coded tape.Means are further provided so that resetting of the manual informationstorage device can be prevented, thereby rendering the quadding andcentering mechanism responsive to the quad signals stored in the manualdevice even though the machine itself is operating automatically undertape control.

In order that this specification may concern itself only with thepresent invention, reference is made to copending application Serial No.378,268, filed September 3, 1953, which discloses an hydraulic quaddingand centering mechanism now in commercial use. While the presentinvention is disclosed in conjunction with that particularform ofquadding and centering mechanism, it is to be clearly understood that itmay be used with any type of quadding and centering mechanism and is notrestricted in use except insofar as hereinafter described.

In the drawings:

Fig. 1 is a schematic perspective view of a line casting machineequipped with apparatus according to the present invention;

' Fig. 1A is a segmental side elevation showing the assembling elevatorswitch;

Fig. 2 is a segmental side elevation of the valve unit for setting thequadding apparatus;

Fig. 3 is a detail view taken along line 3-3 of Fig. 2 and showing thelockout mechanism for a non-quadding operation of the machine;

Fig. 4 is a segmental rear elevation of the delivery slide cam switches;

Fig. 5 is a segmental side elevation of the delivery slide cam switches;

Fig. 6 is a schematic representation of the apparatus for setting thequadder mechanism;

Fig. 7 is a schematic representation of the operated position of thestops for a right hand jaw quadding (i. e. quad left) operation;

Fig. 8 is a schematic representation of the operated position of thestops for a left hand jaw quadding (i. e. quad right) operation;

Fig. 9 is a schematic representation of the operated position of thestops for a double quadding or centering operation;

Fig. 10 is a sectional view showing the construction of the assemblingelevator switch;

Fig. 11 is a sectional view with parts broken away showing theconstruction of the push button box; and

Fig. 12 is a straight line wiring diagram of thecircuits employed in thepresent invention. I i V In the regular operation of a typographicalline casting machine, the character bearing matrices and expansiblespacebands are composed in line and ultimately delivered to a verticallymovable transporter or first elevator which descends to position theline between a left hand vise jaw and'a right hand vise jaw and in frontof a slotted mold, which latter then advances into contact with thePatented Sept. 17, 1957 line and the two clamping jaws for the slugcasting operation.

In casting a full line, the left hand jaw and the right hand jaw arepre-set to positions to accord with the desired length of line. Thenwith the line properly aligned in the usual way with respect to themold, the line is just1- fied, that is to say, the wedge shapedspacebands are driven upwardly by a horizontal justification bar toexpand the line between the fixed jaws.

. After the slug has been cast, the line is raised by the first elevatorto an upper transfer level, and the line removed therefrom preparatoryto the separation of the matrices and spacebands and their return toindividual storage magazines. The first elevator then is lowered to itsintermediate level or line receiving position just before the machinecycle is completed.

In those machines equipped with an automatic quadding and centeringmechanism, either or both of the vise jaws can be controlled so thatprior to the casting operation they will move inwardly from their normalfull line position to a quadding or centering position. When a quad dingor centering operation is being effected, the upward drive of thejustification bar is dispensed with and the spacebands consequentlyremain in their lower or nonexpanded position. The slug resulting fromsuch operation will be cast full line length, but it will have blank orquad spaces to the right, left or on both sides of the characters,depending on whether the mechanism had been set for right hand jawquadding, left hand jaw quadding, or quadding with both jaws orcentering.

Now, referring to Fig. 1, there is shown a line casting machine equippedto provide operation of the quadding apparatus in accordance with theaforementioned features of the present invention. During manualoperation of the machine, matrices are released from their storagemagazines and spacebands are released from the spaceband box 21 underthe control of manually operated keyboard 22 and composed in line inassembling elevator 23. If the line is to be quadded with either or bothof the vise jaws, a corresponding push button 24 of selector box 25 isdepressed. When a line is to be justified, a push button designated Reg.is depressed, and normal or regular machine operations take place. Aswill hereinafter be seen, an actuated push button remains depresseduntil a different operation is desired of the machine, at which time abutton corresponding to the desired operation is depressed. Depressionof the second button sets itself and resets any previously actuatedbutton, the second button remaining set until reset by depression ofstill another button.

After a complete line is assembled in elevator 23, the

operator depresses handle 26 to raise the elevator and bring the line ofmatrices and spacebands to the delivery slide position 27. The downwardmovement of handle 26 pivots rock shaft 30 and causes abutment arm 31,which is keyed thereto, to strike operating plunger 32 of themechanically actuated switch 33, and thereby engage the switch contacts.As will be seen later, engagement of the switch contacts acts totransfer information stored in selector box 25 by a depressed pushbutton to a succeeding information storage stage corresponding to theadvanced position of the composed line. Raising of the elevator itselfis effected by lever connection 34.

In accordance with normal or regular machine operation, the composedline, after reaching delivery position, is transferred to the firstelevator 29. In the event that the elevator is not in position toreceive the line of matrices and spacebands, the line is held in awaiting line" position until the elevator returns to line receivingposition, at which time the line is delivered thereto. This linetransfer movement immediately initiates rotation of the main cam shaftwhich carries the composed line down to the casting position betweenvise jaws 35. Ascent and descent of first elevator 29 is effected,through connection 48, by first elevator cam 49. The initial movement ofthe main cam shaft to lower the line to casting position actuates camcontrolled switch 37, the contacts of which transfer the informationstored in the information stage corresponding to the line in deliveryposition directly to the quadding mechanism, which is thereupon set toprovide the selected quadding operation. The delivery slide cam has beenfound satisfactory for actuating switch 37 although other cams having asuitable contour may be used. The quadding mechanism 46 illustrated is ahydraulic quadder according to the disclosure in the aforementionedcopending application, Serial No. 378,268. Of course, the quaddingmechanism can be locked out and a normal justification operation takesplace by permitting the justification bar to rise and drive thespacebands upwardly to expand the line of matrices between the fixedvisejaws.

After the slug is cast, the first elevator carries the line of matricesand spacebands to the upper transfer position where they are shifted tothe intermediate channel 4-1. As the line is moved into channel 41, thematrices are engaged by the second elevator bar preparatory to beingcarried to the distributor mechanism 42 by second elevator 43 under thecontrol of second elevator cam 44. When the matrices are lifted free ofthe intermediate channel, the spacebands (which remain in the channelinasmuch as they are not engaged by the second elevator bar due to theabsence of coded teeth on the supporting section of the spaceband) arereturned to spaceband box 21. The matrices are returned by thedistribution mechanism to their storage magazines 20.

While the line of matrices and spacebands are being returned to theirstorage positions, the cast slug is carried by mold disc 45 to the slugejecting position where it is acted upon by an ejector and deposited inslug galley 4-6. With the production of the slug, the operation cycle iscompleted and the machine is ready for the casting of succeeding slugs.

Turning now to the quadding mechanism, attention is directed to Figs. 2to 9 which are reproduced from the aforementioned copending applicationSerial No. 378,268.

In order automatically to set the rotary selector valve of the hydraulicquadding mechanism (not a part of the present invention and consequentlynot shown) for the desired operation,, the horizontal rack 46 (Fig. 6)is adapted to be controlled by a piston 47 attached to the left endthereof and movable within a cylinder 50 formed in'housing 51. When thepiston 47 is in its normal leftward position, as shown in Fig. 6, theselector valve is set for a regular or non-quadding operation. Thepiston 47 and the rack 46 may be moved the appropriate distances to theright to adjust the selector valve to right hand jaw quadding, left handjaw quadding and centering posltions.

A pair of rotary solenoids 52 and 53 (Fig. 6), and companion pivotalstop members 54 and 55 controlled thereby, determine the stop positionof the rack when actuated by the piston 47. As shown in Figs. 6 to 9, aplate 56, having projecting teeth and 61, is carried by the rack 46 inits movement to the right. The first or leftward stop 54 is normallyspring-urged to engage the tooth 66 (Fig. 7) unless pivotally rotated toinoperative position by the energization of solenoid 52. The rotaryselector valve and the quadding mechanism will be adjusted for quaddingwith the right hand jaw, i. e. quad left, when the rack 46 is stopped inthis position. The stop 55 is normally spring-urged to inoperativeposition, but When both solenoids 52 and 53 are energized, the former torender the stop 54 inoperative, and the latter to render the stop 55operative, the stop 55' engages the second tooth 61 (Fig. 8), theallowed movement of the rack 46 adjusting the selector valve forquadding with the left hand jaw, i. e. quad right. Finally, when onlysolenoid 52 is energized to render the stop 54 inoperative, the pistonwill drive the rack to the right until the tooth 61 strikes the shouldermember 62 of housing 51 (Fig. 9), thereby adjusting the rotary 'selectorvalve to the centering position.

Operation of piston 47 is regulated by slide valve unit 63 (Fig. 2)which also controls the quadding movements of the right hand and lefthand vise jaws. As disclosed in the above mentioned copendingapplication, the slide valve is actuated by cam controlled lever 64.During a quadding or centering operation, lever 64 is pivoted to movevalve rod 65 rightwardly (Fig. 2) and fluid under pressure passes from apump (not shown), through valve unit 63, through conduit 66 to pistonchamber 67, wherein it exerts force on the piston to drive it and therack 46 rightwardly until such movement is arrested, as by theengagement of a rack tooth and an operated stop, or if no stop isoperated, by shoulder 62. Any fluid which might have been in pistonchamber 70 is exhausted to a fluid reservoir through conduit 71. Thepiston 47 is preferably returned to its normal leftward position duringeach cycle of the machine by flow of fluid under pressure throughconduit 71, and the fluid which had been in chamber 67 is returned tothe reservoir through conduit 66. Sequencing of operation of the varioushydraulic components is fully described in said copending application.

During regular machine operations (with no quadding or centering), thepiston 47 remains in its normal leftward position. This is made possibleby locking out of operation the lever 64 and maintaining the rod 65 ofthe main slide valve in its normal leftward position. In this position,the fluid is freely circulated to the reservoir and the pressure in thehydraulic system does not build up.

The means for locking the lever 64 out of operation is shown in Fig. 3.A stop pawl 72 is maintained in the path of operation of the lever 64 bya small tension spring 73. The pawl, however, is adapted to be trippedduring a quadding or centering operation by member 69 actuated by arotary solenoid 74, the energization of which is controlled by theelectrical circuits hereinafter described. When energized, the solenoidrotates member 69, thus pivoting pawl 72 clockwise about pivot 75 tofree lever 64 and permitting tension spring 75 to urge the lever andvalve rod 65 rightwardly.

Reference will now be made to Fig. 11, which shows the details ofconstruction of the push button. box adapted for actuation by themachine operator. A pair of superposed channel shaped members 80 arerigidly supported by end pieces 81 to form a sturdy frame which isseparated from the top surface of the enclosure by spacers 82 andsecured by screws 83. Each push button comprises a key 84, a latchingmember 85 and a stem 86 therebetween. The stem is guided in a slotprovided in upper channel shaped member 80 while the latching member isguided in a slot provided in the lower channel shaped member 80. Thecentral portion of the latching member is cut out except for theupstanding finger 87, which maintains spring 90 in position. As thebutton is depressed, spring 90 is compressed, thereby urging the buttonto its normal position. The latching member is also provided withaprojecting lug 91 which serves to latch the member in its operatedposition and which is formed with a tapered or wedge shaped surface 92.Slidable in the end pieces 81, is channel shaped catch 93 which also isprovided with slots through which the latch members 85 of the variouspush buttons pass. A leaf spring 94 urges the catch to a downwardlimiting position. As a push button is depressed, the

tapered surface of its projecting lug 91 causes longitudinal movement ofthe catch 93 and at the same time tensions leaf spring 94. When thebutton, and its lug, have been depressed far enough so that the lugclears the catch 93, leaf spring 94 urges the catch to its normalposition and blocks the return of the push button its raised position.

Depressing a second push button causes the catch 93 to be moved againstthe force of the leaf spring 94 to thereby free the first push buttonand permit its return to raised position. At the same time, the secondpush button is held'in depressed position by the return of the catch 93to its normal position. It is thus seen that by depressing a pushbutton, a previously operated push button is reset or restored to itsnormal position. A solenoid 95, mounted on bracket 96, is positioned sothat when energized its plunger 97 acts to move catch 93 to tensionspring 94 and thereby reset any operated push button.

A contact board 100 is mounted on one inside wall of the push buttonenclosure and is preferably formed of an insulating fiber. Adjacent eachpush button latching member 85 and on board 100, is a pair of spacedapart electric contacts 101 which are wired into the circuit to becontrolled by that particular push button. A bridging contact 102 iscarried by the push button latching member so that when the push buttonis depressed, the two electric contacts 101 are connected by bridgingcontact 102 and the circuit controlled thereby completed. There is alsoshown a pair of electric contacts 103 which are normally connected bybridging contact 104 when the push button is in its raised ornon-operated position. Depressing of this latter push button causes thebridging contact 104 to slide off one of the electric contacts tothereby interrupt the electric circuit in which the stationary contactsare wired. While only a single pair of stationary contacts are shown foreach push button, it is to be understood that several pairs may beassociated with each push button so that several electric circuits maybe controlled by a single push button.

Figure 10 showsthe switch mechanism which is actuated by the assemblingelevator; An enclosure 105 is provided with openings 106 and 107 in itsfront and rear walls, respectively, through which pass switch operatingplunger 32. The plunger is reduced in diameter and compression spring111 is fitted over the .reduced portion thereof, being restrained by therear wall of the enclosure and the shoulder 112 formed on the plunger.The top surface of the plunger is formed with a detent 113 which engagesthe front wall of the enclosure and limits the plunger movementresulting from the action of spring 111. The bottom surface of theplunger is formed with a cavity 114 which normally permits switchoperating roller 115 to be in non-actuated position. Rearward movementof the plunger (rightwardly in Fig. 10), as by engagement of elevatorarm 31 and plunger disc 116, depresses the roller 115 to actuate theswitch. At the completion of an elevator operation, spring 111 restoresthe plunger to normal'position. Under certain circumstances, as when itis desired to recast slugs from the same matrices, it is also desirableto maintain switch 33 in its operated condition. This is achieved bymanually withdrawing plunger 32 to a position shown in phantom line inFig. 10. Inasmuch as spring 111 will not act to restore the plunger tonormal position, the switch remains actuated until the plunger ismanually returned to normal position.

The delivery slide cam operated switches 37 and 38, shown in Figs. 4 and5, are secured to mounting bracket which in turn is fastened tosupporting rod 121. As will be seen later, the switch 38 is providedwith normally'engaged contacts and is operated by segment 123 on thedelivery slide cam 36, while the other switch 37 is provided withnormally separated contacts and is actuated by segment 122 of said cam36 during the initial movement of the cam and just before the elevator29 is lowered to bring the composed line of matrices and spacebands tocasting position.

Fig. 12 shows the electrical circuits which are employed to controloperation of the quadding mechanism. The circuits include the solenoidsand mechanically actuated switches hereinabove referred to as well asseveral relays which are contained in anelectrical control box mountedat the rear of the machine but not shown in any of the drawings. Thecircuits are shown in straight or across-the-line form in which thecontacts of a switch are shown separated from the coil which operates.them and arranged in the circuits which they control. Thus, it ispossible to arrange each. coil circuit in a straight line betweenparallel vertical. lines representing the power source. Each of thecircuit components will be given a letter designation which will beindicative of the function which it performs. However, those componentswhich have been discussed before in the description of the mechanicalaspects of the mechanism will also bear the reference numerals inparentheses following the letter designation.

In the circuit diagram the following electro-magnet switches will befound:

Alst quad left memory switch B-lst centering memory switch C2nd quadleft memory switch D-2nd centering memory switch Throughout thedescription which follows, these letters will be applied to the coils ofthe above designated switches. Also, with reference numerals appendedthereto they will beapplied to the contacts of these switches, which areshown in deenergized condition.

In addition to the above electro-magnet switches, the followingmechanically actuated switches are also located in the across-the-linediagram:

Sl-Teletypesetter bail switch-quad left S2-Teletypesetter bailswitch-quad right S3-Teletypesetter bail switch-quad rightS4Teletypesetter bail switch-center S5-First memory clearing switchS64econd memory transfer switch S7Teletypesetter elevator switch.S8Second memory clearing switch S9-Selector solenoid operating switchThere is further included in the circuit diagram the followingsolenoids:

SCE-Centering selector solenoid SPRPush button reset solenoidSQC-Quadding and centering solenoid SQL-Quad left selector solenoid Thevarious electric circuits of the. present invention employed. in aquadding and centering apparatus can best be disclosed through adescription of an operating sequence. Assume first that the apparatus isarranged for automatic operation from the Teletypeset-ter unit and. thatthe lines, W1, W2 areconnected to a suitable source of electric power.

It is wellknown that the Teletypesetter tape may be coded to controleither a quad left, a quad right or a centering operation. According tothis code and the response of the Teletypesetter reading or decodingunit,

bail switch S1 is operated for a quad left operation, bail.

switches S2 and S3 are operated for a quad right operation, and hailswitch S4 is operated for a centering operation.

If the first line of matrices being composed under the control of thetape is to be quadded with the righthand vise jaw (quad left), then aquad left signal willfollow the various matrix release signals and willcause actuation of bail switch S1. Immediately a circuit is completedfor 1st quad left memory switch coil A and contacts All and A2 engage.Contacts A1 are connected in parallel with bail switch S1 and henceprovide a self holding circuit which permits the bail switch to berestored to its normal non-operated position. The following tape signalwill be the assembling elevator signal and therefore the line ofmatrices and spacebands will be carried up by the elevator. Upwardmovement of the elevator is accompanied by pivoting of rock shaft 30'andswinging of abutment arm 31, the latter of which strikes the operatingplunger 32 of switch33/ Operation of the switch engages contacts S6 tocomplete a circuit for 2nd quad left memory switch coil C, the circuitextending through" normally engaged contacts S8, coil C, contacts A2,recti tier CRP and contacts S6. The rectifier CRF, as well as rectifierDRF, is provided to prevent the establishment of sneak circuits.Energization of coil C causes the en'- gagement of contracts C1, C2, andC3, the first of which completes a self holding circuit for coil C. Assoon as this circuit is established, contacts S5 of switch 33 areseparated to interrupt the circuit for coil A. When the assemblingelevator reaches its upper terminal position, the line of matrices andspacebands is removed therefrom and the elevator is returned to itslower or composing position. Incident thereto, switch 33 is restored tonormal condition with contacts engaged and contacts S6 separated. Asignificant feature of the present circuitry is that although the firstline has not been cast, a succeeding line of matrices can be composedand a signal entered into the circuits for a quadding or centeringoperation which differs from that associated with the first line.

Returning to the first line of matrices and spacebancls which has beencarried to the delivery position and there removed from the assemblingelevator, it will be assumed that. the line has been immediatelydelivered to the first elevator and a cycle of machine operationsthereby initiated in the usual manner. Switch 37 is actuated by thesegment 122 of the delivery slide cam 36 and contacts S9 thereof engageto complete a circuit for the quad left selector solenoid SQL (53),contacts C2 having previously been engaged. A circuit is also completedfor solenoid SQC (74) to release pawl 72 and permit lever 64 to actuatevalve 63 and drive piston 47 and rack 46 to their operated positions.Energization of this solenoid actuates stop 55 as previously disclosed.Once the quadding mechanism is set in accordance with the desiredoperation, contacts S8 of companion switch 38 separated to interrupt thecircuit for coil C. By the time that the first elevator is seated on thevise cap, switches 37 and 33 are restored to normal non-operatedcondition, wherein contacts S9 are engaged and contacts S8 separatedlThus, here again the circuitry is such that another line of matricesandspacebands may be in waiting line position after being removed from theassembling elevator and a quadding or centering signal stored in anassociated switch.

While for a quad left operation, the movement of the piston and rack isarrested by the engagement of tooth and non-operated stop 54, it shouldbe noted that it is only necessary to maintain a solenoid energized fora period sufficient for a tooth to engage a stop. Consider, for example,quadding right, when the position of the plate is controlled by theengagement of tooth 61 and stop 55. Thereafter the pressure exerted onpiston 47 maintains the tooth and stop in frictional engagement. This isanalogous to a self latching selector mechanism in an electromechanicalquadding apparatus wherein it would be suflicient to energize a solenoidfor a period sufficient for the self latching feature to be actuated.

Having described the transfer of quad left signals through the circuitryfrom the operation of the Teletypesetter bail switch to the setting ofthe quadder apparatus, it is believed that a similar transfer of a quadright or a centering signal will be readily apparent without a detaileddescription of the circuit operations.

Furthermore, operation of the circuits and the resulting setting of thequadding apparatus from the push buttons is similarly obvious. Forexample, if the machine is being manually operated and the operatordesires to quad a line leftwardly, he depresses the Quad Left pushbutton to engage contacts QLl and QL2. This he may do either before orafter he composes the line of matrices- After the and spacebands in theassembling elevator. line is composed and the proper push buttondepressed, the operator actuates handle 26 to raise the assemblingelevator to bring the composed line to delivery position.

Downward movement of handle pivots arm 31 and actuates switch 33 toclose its contacts S6 and thereby com plete a circuit for 2nd quad leftmemory switch coil C. This corresponds to the composed line in linedelivery position. As the line advances through the machine, the signalassociated therewith progresses to various memory relays and eventuallyto the solenoid for setting the quadding apparatus as in the case wherethe machine is under automatic control.

In the description of the mechanical details and particularly that partdirected to the push button unit 25, it was shown how depression of asecond push button reset a previously depressed button, so that it wasnecessary for the operator only to depress a selected button to give thedesired operation. However, if the machine is set for automaticoperation, 'it becomes necessary to-reset any push button which may havebeen depressed when the machine was operated manually. To achieve thisresult there is provided a circuit from line W1 through Teletypesetterelevator switch S7, the parallel connected push button contacts QL1, QRIand CE1, the normally closed push button contacts REG, operated by theregular operation push button, and push button reset solenoid SPR (95)to line W2. In operation, if any push button is depressed, e. g. thequad left push button, the contacts associated therewith, QL1, areengaged. Thus when the machine is to be operated automatically from thetape,-

it is a simple operation to insert the tape in the Teletypesetter unitand proceed to let the machine compose automatically. A quad signal willbe stored in 1st memory switches A and B in accordance with the codedsignal on the tape as described above. The signal will then betransferred to the 2nd memory switch C and D upon the rise of theassembling elevator. However, in addition to actuation of switch 33 andthe engagement of contacts S6 and subsequent separation of contacts S5,switch S7 (located in the Teletypesetter unit and operable when theelevator signal is received therein) is actuated. Engagement of theswitch contacts completes a circuit through contacts S7, QL1, REG, andcoil SPR to energize solenoid SPR (95) and reset the depressed pushbutton as heretofore described. It is believed to be obvious without adetailed description that if any of the push buttons (quad left, quadright or centering) be depressed, the same will be automatically resetwhen the machine is operated from the Teletypesetter unit.

This same circuit which permits the automatic resetting of a depressedpush button may also be utilized to provide for the feature whereby,even if the machine will compose matrices and spacebands responsive to atape, quadding or centering of the various lines will be responsive tothe push buttons. In other words, a depressed push button will not bereset automatically when the tape is fed through the decoding unit. Thisfeature is of advantage when numerous lines are all to be operated onsimilarly, that is, all the lines are to be quadded left or quaddedright or all are to be centered.

In order to achieve this result in operation it is only necessary todepress the button selected for operation, e. g. the quad left pushbutton, and the regular push button. Both buttons must be depressedsimultaneously in order that they both remain depressed. If theoperation were sequential, the latter operated push button would resetthe previously operated push button due to the mechanical constructionof the push button box. Depression of the regular push button toseparate contacts REG prevents the completion of a circuit for the pushbutton reset solenoid SPR (95) and hence if one of the other pushbuttons is depressed it will not be reset. Consequently, the signalrepresented by the depressed push button will be transferred through thememory switches to the selector solenoids for each composed line passingthrough the machine and it will not be necessary to provide a quadsignal on the tape for each line to be composed.

Having thus described our invention, it is realized that many apparentlydilferent embodiments can be made without departing from the spirit andscope thereof and therefore the description and drawings hereof are tobe interpreted in an illustrative rather than a limiting sense.

What is claimed is:

1. In a typographical casting machine, adapted for operation from akeyboard or from a coded tape, having a pair of line clamping jaws eachof which is movable from a normal full line receiving position to aquadding position and return, and a tape reading mechanism forcontrolling operation of the machine, the combination of mechanism foreffecting a quadding operation, means for conditioning said mechanismfor one of a plurality of quadding operations, means for controllingsaid conditioning means to provide a selected operation when the machineis operated from the keyboard, and means responsive to tape operation ofsaid machine to deactivate said controlling means and render saidconditioning means responsive to the tape.

2. A combination according to claim 1, wherein the controlling meansincludes a plurality of push buttons, each of which is adapted toprovide a selected operation.

3. A combination according to claim 2, including a plurality of electriccontacts and wherein depression of a push button results in theactuation of at least one pair of electric contacts.

4. A combination according to claim 3 including means, efiective when apush button is depressed to actuate electric contacts, to maintain thecontacts in actuated condition.

5. A combination according to claim 3, wherein the tape responsive meansis effective to restore the actuated contacts to their normal condition.

6. A combination according to claim 4, wherein the maintaining means isa mechanical catch for holding the push button in depressed position.

7. A combination according to claim 6, wherein the tape responsive meansis an electrically operated mem her which actuates the mechanical catchto permit restoration of the depressed push button to normal position.

8. A combination according to claim 1, including means to deactivate thetape responsive means and render said conditioning means responsive tothe controlling means when the machine is being tape operated.

9. A combination according to claim 8, wherein said deactivating meansincludes electric contacts and a push button, depression of whichresults in the actuation of at least one pair of electric contacts.

10. A combination according to claim 9, including means to maintain theelectric contacts in actuated condition.

11. A combination according to claim 9 wherein the tape responsive meansincludes an electrically operated member and the means for deactivatingsaid responsive means include the push button actuated contacts forinterrupting the circuit to said electrically operated member.

12. In or for a typographical casting machine having a push buttoncontrolled quadding mechanism, the combination of a plurality of pushbuttons, locking means for retaining a push button in operated position,means whereby upon operation of the push button the locking means istripped to release a previously operated push button and to retain theoperated push button, and electrically actuated means for tripping thelocking means to release a push button from operated position.

13. A combination according to claim 12, including a tape readingmechanism for controlling operation of the casting machine from a codedtape and wherein the electrically actuated means is responsive to thetape.

14. A combination according to claim 12, wherein each push button butone is effective upon operation to engage a pair of electrical contactsand wherein the excepted push button is elfective to separate a pair ofcontacts, the contacts which engage being connected in parallel, and

moses?" 11 said parallel circuit being connected in series with theseparable contacts and the electrically actuated means.

15. A combination according to claim 14, wherein the tape readingmechanism includes a pair of electric contacts which engageautomatically when the machine is tape operated and which are connectedin series with the electrically actuated means.

16; In a typographical casting machine, adapted for operation from akeyboard or from a coded tape, having a pair of line clamping jaws, atleast one of which is movable from a normal full line receiving positionto a qu'addin'g position and return, and a tape reading mechanism forcontrolling the operation of the machine, the combination of mechanismfor effecting a quadding operation, means for conditioning saidmechanism for a quadding operation, manual means for controlling saidconditioning mechanism when the machine is operated from the keyboard,and means responsive to tape operation of the machine for deactivatingsaid manual means and rendering the conditioning means responsive to thetape.

17. A combination according to claim 16, including means fordeactivating the tape responsive means and maintaining the conditioningmeans under control of the manual means While the machine is stillsubject to tape operation.

18. In a typographical casting machine, adapted for operation'from akeyboard or from a coded tape, having a pair of line clamping jaws eachof which is movable from a normal full line receiving position to aquadding position and return, and a tape reading mechanism forcontrolling operation of the machine, the combination of mechanism foretfecting a quadding operation, means for conditioning said mechanismfor one of a plurality of quadding operations, manual means for settingsaid conditioning means to provide a selected quadding operation whenthe machine is operated from the keyboard, and means for automaticallyresetting said conditioning means to provide a different selectedquadding' operation when the machine is operated from the tape.

19. A combination according to claim 18, wherein the automatic means iscontrolled from the coded tape.

20. A combination according to claim 18, including manual means fordisabling the automatic means during tape operation of the machine tomaintain the manual setting of the conditioning mechanism.

References Cited in the file of this patent UNITED STATES PATENTS2,672,972 Rossetto et a1 Mar. 23, 1954

